Precision pipe is charactrized by high precision dimension tolerances, and delivered in cold drawn or cold rolled, pickled, polished or bright annealed surface.
Younglee manfactures and supplies precision tube in full range of stainless steel, and wide range of duplex / super duplex stainless steel grades.
1) Product standards:
The production and inspection standards of precision pipes are the same with normal stainless steel seamless pipes, but with much more precision tolerance standards.
- EN 10216-5 TC1/TC2, EN 10297-2
- ASTM A 213,
ASTM A 312, A 269, A632, A 511, etc.
- PED 97/23/EC
- NACE MR0175
- EN 10305-1, EN ISO 1127 D4/T4
2) Size range:
O.D: 3 to 101 mm
W.T: 0.5 - 20 mm
According to the thickness, precision tubes can be divided as thick wall precision tube
and thin wall precision tube
3) Dimension tolerances:
Tolerances of stainless steel precision tube are usually according to customer's requirments, and mostly the precision tolerances are EN 10305-1, EN ISO 1127 D4/T4.
O.D +/- 0.05 mm;
+/- 0.05 mm
Stainless steel seamless tubes can also be machined by honing or SRB process to produce stainless steel honed tubes.
In this case the ID tolerance could be H7, H8 or H9 depends on customers' request and the sizes.
4) Materials / Steel grades:
Precision pipe is available in full range of stainless steel grades and in wide range of duplex/ super duplex stainless steel grades.
ASTM / AISI: 316 /316L, 304/304L, 321/321H, 316Ti, 347 / 347H, S31803, S32750,S32760, 2205, 904 / 904L.
EN/DIN: 1.4301/1.4307, 1.4401/1.4404, 1.4541/1.4878, 1.4571, 1.4462, 1.4410, 1.4539.
Precision pipes are used in all industrial applications (such as chemical, marine, gas, automobile, oil and so on) where requires high precision dimensions/ accuracy sizes, especially for machine, instruments production.